Will not duplex - fails duplex quick test - Lexmark E450dn Laser Printer

This appears to be something to do with pumps, as opposed to the category 'Cars and Trucks'. 'make model (what it is)' in all questions please.

Contact Liberty Pumps direct.

Duplex Control Panels - Liberty Pumps

https://www.libertypumps.com > Category > duplex-co...
Automatically alternates pump operation - equalizing wear and extending pump life; Plug-in ready wiring for easy and quick installation (indoor models only); 10 ...


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Hi Mary L,
Good day... This steps may be helpful for you. try sorting one by one steps...below
solution 1:
1.The duplexer side adjust has failed.
2. Turn the printer off and then on.
3. Reseat the duplexer assembly.
4. Replace the duplexer assembly.

solution 2:
1. The duplex printing unit is not functioning.
2. Turn the MFP off, and then turn the MFP on.
3.Reseat the duplexer.
4. Check the connection between the duplexer and the DC Controller.
5. Replace the duplexer.

solution 3:
1. Duplex mechanism failure.
2. Duplex slide adjust has failed.
3. Temporary error.

Hope this solve the problem...
Thanks in Advance.
Hp Error Code 69 Service Errors 69 Printer Repair Message

try resetting your printer. test print out and alignment. make sure it is as a default printer on your computer.

You have to check the settings when sending a print job through

If you need further help, I’m available over the phone at https://www.6ya.com/expert/alex_22751bbefa74c3d0

There are several thing which may cause unexpected jams in the duplex tray...,
1. first thing to do is eliminate all other possibilities by removing the netCard/Net connection Parralel connection so the machine is Stand Alone. make sure there is paper in the feed cassette 2 ( paper Tray)
press the TICK to enter menu
scroll down to diagnostic- press TICK
scroll down to paper path test - press Tick
scroll down to Source and select tray 2
scroll down to Duplex And select YES
( if the duplex option is not visible here then there is a connection/seating problem with the duplex tray)
Scroll down to copies and select 10
scroll up to print test page and press tick
the machine should now start duplexing 10 pages,
if you get the same error ( 1 page enters then jams)
it could be a dirty/snapped paper entry sensor,( looks like a little plastic match stick that protrudes into the feed path of the paper)
use a can of pressurised air to Blast any dust away from this arm and the surrounding area being careful to follow the Paper sensor Arm back to the sensor and blasting this as well-
Duplexer tray are cheaper than an engineer call out, if the fix above fails , your cheapest option may be a replacement Duplexer tray, available from most HP office equipment Stores as well as Belmonte Business Equipment.

A printer error occurred where X is
detailed below.
0 The duplex mechanism failed
1 The duplex side-adjust failed
________________________________
1 Turn off the printer, and then
turn the printer on to
continue.
2 Reseat the duplexer (make
sure that the printer is turned
off).
3 Perform a service test. See
page 213.
4 Perform a paper-path test.
See page 213.
5 If the error persists, replace
the duplexer (make sure tha

You've done everything I would have done and more.
How about you installing a DOA duplexer. At this point I would change it again. Is there another printer that you can swap duplexers with?
There is a paper path sensor test (letter H) and manual sensor test . I don't know if the Component test checks the duplexer, but you should be able to find out.
Is the printer still under warranty? Can you call HP or are you an HP tech and you can call 2nd level support.
Just a thought....when you run a Config sheet, does it show the duplexer?

The document I was thinking of referred to fuser wrap jams. I did some quick checking of duplex jams though and this might give you some guidance to check for.

These errors refer to jams when repicking to print side 2.

Cause Solution The spring of the duplexing media-repickup-sensor lever is unhooked Check the spring and place it in the correct position. The duplexing media-repickup-sensor lever is damaged Replace the duplexing feed unit. Poor contact of the duplexing media-repickup-sensor connector Reconnect the connectors of the duplexing media-repickup sensor (J1945), intermediate (J1909, J1950) and the DC controller PCA (J4105). The duplexing media-repickup sensor is defective Check the duplexing media-repickup sensor by the sensor monitor mode. If the sensor is defective, replace the duplexing feed unit. Poor contact of the duplexing repickup-motor connector Reconnect the connectors of the duplexing repickup motor (J1771), intermediate (J1908, J1939, J1941) and the duplexing driver PCA (J4104). The duplexing repickup motor is defective Replace the duplexing feed unit.

Hi


You are getting Error 13.12 due to paper jam at Paper feed 1. It can also happen when the Paper doesn't reach PS2(paper sensor 2).

Please check the picture for more details---



Try printing from Tray 2 or Tray 3, if it fails printing from tray 2 or 3 then Paper sensor 2 (PS2) is bad. To check the movement of flag insert the paper manually in the sensor path.

Remove any paper present in printer and then perform a paper path test using a duplexer. If issue is still not resolved then please remove the duplexer unit and re seat it. After re seating the duplexer your issue will be resolved.

Daniel Scott

Check in printer menus if duplex is recognized by the printer, is not try to see if connector between printer and duplex is not damage. I had this same problem and had the replace the connector. damaged it connecting the printer to it.